Debian10 rootfs - Revision history

Winston.huang at 02:43, 17 April 2020

2020-04-17T02:43:58Z

Winston.huang at 02:25, 17 April 2020

2020-04-17T02:25:15Z

Winston.huang at 02:10, 17 April 2020

2020-04-17T02:10:34Z

Winston.huang at 02:09, 17 April 2020

2020-04-17T02:09:59Z

Winston.huang at 02:04, 17 April 2020

2020-04-17T02:04:30Z

Winston.huang at 01:53, 17 April 2020

2020-04-17T01:53:50Z

Winston.huang at 01:52, 17 April 2020

2020-04-17T01:52:49Z

Winston.huang: Created page with "{{DISPLAYTITLE:How to build one Debian 10 SDcard image for i.MX8}} {| align="right" |- | TOC |} = Host Prerequisites = == required packages ==
2020-04-17T01:10:07Z

Created page with "{{DISPLAYTITLE:How to build one Debian 10 SDcard image for i.MX8}} {| align="right" |- | TOC |}  = Host Prerequisites = == required packages == <syntaxhighligh..."

New page
{{DISPLAYTITLE:How to build one Debian 10 SDcard image for i.MX8}}

{| align="right"
|-
| TOC
|}

= Host Prerequisites =

== required packages ==

<syntaxhighlight lang="bash">
sudo apt-get install binfmt-support qemu-user-static wget
modinfo binfmt_misc
</syntaxhighlight>
== pre-built Yocto SD card image ==

:e.g. 5720A1AIM20LIV90100_iMX8M_2020-04-03.img.gz

=== uncompress the image ===

<syntaxhighlight lang="bash">
SDIMAGE=5720A1AIM20LIV90100_iMX8M_2020-04-03.img
zcat $SDIMAGE.gz > $SDIMAGE
</syntaxhighlight>
=== backup modules and firmware ===

<syntaxhighlight lang="bash">
BACKUPDIR=~/${SDIMAGE%%_}
mkdir $BACKUPDIR
MNT=~/mnt
mkdir -p $MNT
PL=`fdisk -lu $SDIMAGE | grep "83 Linux" | awk '{print $2}'`
sudo mount -o offset=$((PL512)) $SDIMAGE $MNT
sudo tar zcvf $BACKUPDIR/lib_modules.tgz -C $MNT lib/modules
sudo tar zcvf $BACKUPDIR/lib_firmware.tgz -C $MNT lib/firmware
sudo umount $MNT
</syntaxhighlight>
= Building Procedures =

== getting Debian 10 (Buster) base rootfs ==

<syntaxhighlight lang="bash">
export ROOTFS=~/rootfs_arm64-deb10
sudo apt -y install debian-archive-keyring
sudo apt-key add /usr/share/keyrings/debian-archive-keyring.gpg
sudo qemu-debootstrap --arch=arm64 \
--keyring /usr/share/keyrings/debian-archive-keyring.gpg \
--variant=buildd \
--exclude=debfoster buster $ROOTFS http://ftp.debian.org/debian
</syntaxhighlight>
== chroot environment ==

=== before entering a chroot ===

<syntaxhighlight lang="bash">
sudo mount -t proc proc $ROOTFS/proc
sudo mount -t sysfs sysfs $ROOTFS/sys
sudo mount --bind /dev $ROOTFS/dev
sudo mount --bind /dev/pts $ROOTFS/dev/pts
</syntaxhighlight>

=== entering a chroot ===

<syntaxhighlight lang="bash">
HOME=/root sudo chroot $ROOTFS /bin/bash --login -i
</syntaxhighlight>

=== installation ===

<syntaxhighlight lang="bash">
cd ~
apt-get update
apt -y install iputils-ping iproute2 lsb-release vim
apt -y install python2.7-minimal
ln -s python2.7 /usr/bin/python
ln -sf bash /bin/sh
ln -sf bash.1.gz /usr/share/man/man1/sh.1.gz

apt -y install sudo
apt -y install systemd systemd-sysv kmod
apt -y install network-manager
apt -y install parted
</syntaxhighlight>

=== configuration ===

<syntaxhighlight lang="bash">
groupadd -g 1000 adv
useradd -u 1000 -d /home/adv -m -g adv -G adm,sudo,audio adv
CRYPT=$(python -c 'import crypt; print crypt.crypt("'adv'", "$6$fWqaDxsq")')
sed -i "s|^adv:[^:]\+:|adv:$CRYPT:|" /etc/shadow
sed -i "s/^root:[^:]\+:/root::/" /etc/shadow
echo "iMX8" > /etc/hostname
echo -e "127.0.0.1 localhost \n127.0.1.1 `cat /etc/hostname`\n" > /etc/hosts

ln -sf ../run/resolvconf/resolv.conf /etc/resolv.conf
apt-get clean
mkdir /lib/modules
mkdir /lib/firmware
history -c && rm ~/.bash_history
</syntaxhighlight>

=== leaving the chroot ===

<syntaxhighlight lang="bash">
logout
</syntaxhighlight>

=== after leaving the chroot ===

<syntaxhighlight lang="bash">
sudo umount -lf $ROOTFS/dev/pts
sudo umount -lf $ROOTFS/dev
sudo umount $ROOTFS/sys
sudo umount $ROOTFS/proc
</syntaxhighlight>
== Creating Debian 10 SDcard image ==

=== duplicate from Yocto SDcard image ===

<syntaxhighlight lang="bash">
DEBIMAGE=`sed "s/AIM20.LIV/DIV/" <<< ${SDIMAGE%%_}`_Debian10_base.img
cp $SDIMAGE $DEBIMAGE
mkfs.ext4 -F -E offset=$((PL512)) $DEBIMAGE

</syntaxhighlight>
=== restore modules & firmware ===

<syntaxhighlight lang="bash">
sudo mount -o offset=$((PL512)) $DEBIMAGE $MNT
sudo rsync -av $ROOTFS/ $MNT/
sudo tar zxvf $BACKUPDIR/lib_modules.tgz -C $MNT
sudo tar zxvf $BACKUPDIR/lib_firmware.tgz -C $MNT
sudo umount $MNT
</syntaxhighlight>
== SDcard image is ready ==

← Older revision		Revision as of 02:43, 17 April 2020
Line 1:		Line 1:
−	{{DISPLAYTITLE:How to ~~get~~ Debian 10 rootfs base for iMX6/iMX8}}	+	{{DISPLAYTITLE:How to create Debian 10 rootfs base for iMX6/iMX8}}

	{\| align="right"		{\| align="right"

← Older revision		Revision as of 02:09, 17 April 2020
Line 114:		Line 114:
	sudo umount $ROOTFS/proc		sudo umount $ROOTFS/proc
	</syntaxhighlight>		</syntaxhighlight>
		+
		+	= basic root filesystem is ready =
		+	go on to create SD card image if needed

@@ Line 9: / Line 9: @@
 = Host Prerequisites =
-== get the required packages ready==
+== get the required packages ready ==
@@ Line 16: / Line 16: @@
 modinfo binfmt_misc
 </syntaxhighlight>
 = Building Procedures =
 == set ARM architecture ==
 <syntaxhighlight lang="bash">
@@ Line 39: / Line 39: @@
 --exclude=debfoster buster $ROOTFS http://ftp.debian.org/debian
 </syntaxhighlight>
 == go on in chroot ==
 === set the mount point ===

@@ Line 114: / Line 114: @@
 sudo umount $ROOTFS/proc
 </syntaxhighlight>
 go on to create SD card image if needed

@@ Line 93: / Line 93: @@
 ln -sf ../run/resolvconf/resolv.conf /etc/resolv.conf
 apt-get clean
-history -c && rm ~/.bash_history
+history -c
 </syntaxhighlight>

@@ Line 1: / Line 1: @@
-{{DISPLAYTITLE:How to build one Debian 10 SDcard image for i.MX8}}
+{{DISPLAYTITLE:How to get Debian 10 base rootfs for iMX6/iMX8}}
 {| align="right"
@@ Line 9: / Line 9: @@
 = Host Prerequisites =
-== required packages ==
+== get the required packages ready==
@@ Line 16: / Line 16: @@
 modinfo binfmt_misc
 </syntaxhighlight>
-:e.g. 5720A1AIM20LIV90100_iMX8M_2020-04-03.img.gz
+= Building Procedures =
 <syntaxhighlight lang="bash">
-SDIMAGE=5720A1AIM20LIV90100_iMX8M_2020-04-03.img
+export ARCH=arm64 # for i.MX8
-zcat $SDIMAGE.gz > $SDIMAGE
+export ARCH=armhf # for i.MX6
 </syntaxhighlight>
-<syntaxhighlight lang="bash">
+== get the basic rootfs ==
 <syntaxhighlight lang="bash">
-export ROOTFS=~/rootfs_arm64-deb10
+export ROOTFS=~/rootfs_${ARCH}-deb10
 sudo apt -y install debian-archive-keyring
 sudo apt-key add /usr/share/keyrings/debian-archive-keyring.gpg
-sudo qemu-debootstrap --arch=arm64 \
+sudo qemu-debootstrap --arch=${ARCH} \
 --keyring /usr/share/keyrings/debian-archive-keyring.gpg \
 --variant=buildd \
 --exclude=debfoster buster $ROOTFS http://ftp.debian.org/debian
 </syntaxhighlight>
-=== before entering a chroot ===
+== go on to install and configure in chroot ==
@@ Line 68: / Line 53: @@
-=== entering a chroot ===
+=== enter the chroot ===
@@ Line 104: / Line 89: @@
 sed -i "s|^adv:[^:]\+:|adv:$CRYPT:|" /etc/shadow
 sed -i "s/^root:[^:]\+:/root::/" /etc/shadow
-echo "iMX8" > /etc/hostname
+echo "unknown" > /etc/hostname
-echo -e "127.0.0.1    localhost \n127.0.1.1    `cat /etc/hostname`\n" > /etc/hosts
+echo -e "127.0.0.1    localhost \n127.0.1.1    unknown\n" > /etc/hosts
 ln -sf ../run/resolvconf/resolv.conf /etc/resolv.conf
 apt-get clean
 history -c && rm ~/.bash_history
 </syntaxhighlight>
-=== leaving the chroot ===
+=== leave the chroot ===
@@ Line 123: / Line 106: @@
-=== after leaving the chroot ===
+=== clear the mount point ===
@@ Line 132: / Line 115: @@
 sudo umount $ROOTFS/proc
 </syntaxhighlight>